Gold and Silver Refining – 15V 3000A IGBT Rectifier by GAOHUI

The GAOHUI 15V 3000A IGBT rectifier is engineered specifically for high-volume gold parting and silver scrap electrolysis. This heavy-duty DC power supply solves the reliability gap left by aging eBay units and hobbyist variable supplies, delivering consistent, continuous full-load operation for commercial refining cells. As an experienced industrial high frequency rectifier factory, GAOHUI provides a purpose-built solution that eliminates the downtime and voltage drift of converted equipment or low-grade import alternatives.
PART 1 KEY FEATURES AND ENGINEERING HIGHLIGHTS
SUSTAINED FULL-LOAD DUTY CYCLE: Unlike consumer-grade adjustable supplies that derate under prolonged load, this unit is rated for continuous 3000A output at 15V. It employs industrial-grade IGBT switching modules and air-forced heat sink arrays to maintain thermal stability during multi-hour electrolysis runs.
HIGH-FREQUENCY SWITCHING EFFICIENCY: Operating above 20kHz, this rectifier converts AC line power with minimal losses, reducing waste heat and energy costs. The advanced design ensures the low ripple required for precise silver crystal deposition and gold purity isolation, outperforming older thyristor-based units.
RUGGED INPUT/OUTPUT TERMINATION: The package includes heavy-gauge copper anode and cathode leads with industrial alligator clips, sized to handle 3000A continuous current without excessive heating. No retrofitting required for connection to 1-inch bus bars or titanium basket anodes.
INDUSTRIAL HIGH FREQUENCY RECTIFIER FACTORY QUALITY CONTROL: Every unit undergoes a 72-hour burn-in test at full rated load before shipment. A comprehensive OCR (Over-Current Relay) system is standard, preventing catastrophic failure during cell shorts or accidental over-current events.
PART 2 TECHNICAL SPECIFICATIONS TABLE

PART 3 ADVANCED BUILT-IN PROTECTION SYSTEMS
This rectifier protects both the equipment and your high-value precious metal electrolyte baths. Beyond the standard OCR, the system includes independent over-voltage clamping to prevent damage to sensitive cell membranes or cathodes. A thermal shutdown circuit monitors internal junction temperatures and automatically reduces output current before reaching critical limits. Soft-start circuitry gradually ramps power to prevent inrush current tripping of facility breakers when connecting to large cell arrays.
For refining operators seeking a reliable HEAVY-DUTY DC POWER SUPPLY PRICE that avoids the cost of repeated hobby-grade failures, this unit delivers total cost of ownership advantages through reduced downtime and extended component life.
PART 4 TARGET INDUSTRIAL APPLICATIONS
GOLD PARTING CELLS: Delivers stable low-voltage current required for selective anodic dissolution of gold into aqua regia or chloride electrolytes. The ripple-free output minimizes co-deposition of base metals.
SILVER SCRAP ELECTROLYSIS: Optimized for 15V operation at high amperage, enabling rapid recovery of silver from spent cyanide solutions or nitrate-based cells. The heavy-gauge output leads handle the thermal load of high-conductivity silver anodes.
PRECIOUS METAL BULLION REFINING: Suitable for refining bars up to 100kg daily capacity. The GAOHUI system replaces unreliable multiple-cheap-unit arrays with a single, panel-mounted industrial chassis.
IGBT RECTIFIER MANUFACTURER ENGINEERING SUPPORT: Direct application guidance is available for integrating this unit into existing cell circuits, including wiring schematics for series/parallel cathode arrays.
PART 5 CUSTOMIZATION AND TAILORED ENGINEERING SERVICES
GAOHUI offers full factory customization to match your specific refining chemistry and batch size. Our standard DC output range spans 1V to 1000V and 1A to 100,000A, with input options for single-phase or three-phase AC from 110V to 575V.
Standard available modules include:
Process Timer: Programmable run duration with automatic shutoff, preventing over-prolonged electrolysis and gold over-plating on cathodes.
Multi-Stage Profile Control: Set up to 16 current/voltage steps in sequence for complex alloys or multi-metal bullion.
Ampere-Minute Integrator: Real-time totalized current tracking for accurate metal recovery yield calculations per batch.
Automatic Reverse Polarity (ARP): Cycles polarity at intervals to break passivation layers on anodes, improving current efficiency.
Soft-Start Module: Ramps output over configurable seconds to protect delicate starting surfaces.
Output interfaces include RS485 Modbus RTU for PLC integration, Ethernet TCP/IP for remote monitoring and data logging, and 4-20mA analog input for external controller override.
For special refining applications requiring pulsed current, we offer adjustable pulse functions from 1Hz to 3000Hz with independent on/off time control, enhancing deposit morphology in electrochemical dissolution processes.
As a factory direct CUSTOM CURRENT VOLTAGE RECTIFIER partner, GAOHUI provides free consultation on control integration, bus bar sizing, and cell layout optimization. Contact our engineering team with your specific voltage and amperage targets for a tailored quotation and reduced lead time.